This is a great video by Ira Glass talking about how to produce great stories but it is pretty applicable to all kinds of creative ventures.
His advice is quite simple, you will basically get better with your work over time by constant practice and The video series reminds me of Malcolm Gladwell's theory of 10,000 hour rule. By doing anything long enough say 10,000 hours, you will eventually become a pro at whatever you do (read more on - Outliers.)
I found this clip by my always interesting content seeking friend Ash.
If you are interested in how to further improve your creative ideas, this video will be a great resource.